His shameless half-brother Muhammad-‘Ali was turned away.

On the ninth day after ‘Abdu’l-Baha’s ascension, which was the final official day of mourning,... Not all of the people who arrived to pay their respects to the grieving family were welcomed through the door of the Master’s home. His shameless half-brother Muhammad-‘Ali was turned away.

(Ethel Jenner Rosenberg: The Life and Times of England's Outstanding Bahá'ı́ Pioneer Worker
by Robert Weinberg, p. 188)